Radiation Measurements最新文献_第10页

IF 1.6 3区物理与天体物理

Radiation Measurements Pub Date : 2025-02-01 DOI: 10.1016/j.radmeas.2025.107373

Mehmet Erhan Emirhan

{"title":"Active radon detection unit","authors":"Mehmet Erhan Emirhan","doi":"10.1016/j.radmeas.2025.107373","DOIUrl":"10.1016/j.radmeas.2025.107373","url":null,"abstract":"<div><div>Radon (<sup>222</sup>Rn) is a naturally occurring radioactive gas that poses health risks when accumulated indoors. In this study, we present the design and implementation of an Active Radon Detection Unit (ARDU) for indoor radon measurements. The ARDU utilizes Si-PIN photodiodes for the electrostatic collection of radon progeny, enabling the real-time monitoring of radon levels. It also integrates some sensors for measuring ambient temperature, humidity, pressure, carbon monoxide, and methane, providing a comprehensive indoor air quality assessment.</div><div>The ARDU consists of six main components: the amplifier board, the collection chamber, the high voltage module, the microprocessor integrated control board, the global system for mobile communication module, and the liquid crystal display touch screen. The amplifier board amplifies and digitizes the signals generated from the alpha particles depositing their energy in Si-PIN photodiodes. The control board processes the data from the environmental sensors and amplifier board and transfers these to an integrated microprocessor. A mobile communication module facilitates remote data transmission via a short message service.</div><div>Experimental results demonstrate the effectiveness of the ARDU in measuring radon levels in indoor environments. Comparative analysis with commercially available radon detectors shows a good agreement within the daily average. Two different methods were performed for converting the raw counts per hour to Bq/m<sup>3</sup>. A radon emanation standard source and a calibrated gold standard device were used as a reference. Secondly, statistical analysis confirms the significance of the regression model used for converting raw detector signals to Bq/m<sup>3</sup> units.</div><div>Overall, the ARDU provides a cost-effective solution for continuous indoor radon monitoenvironmental factors. The device's portability and affordability make it suitable for widespread deployment, contributing to comprehensive radon monitoring efforts.</div></div>","PeriodicalId":21055,"journal":{"name":"Radiation Measurements","volume":"181 ","pages":"Article 107373"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Real time monitoring of Rn-222 in workplaces and estimation of working time correction factor 工作场所Rn-222实时监测及工作时间校正系数估算

IF 1.6 3区物理与天体物理

Radiation Measurements Pub Date : 2025-02-01 DOI: 10.1016/j.radmeas.2024.107359

I. Dimitrova, V. Todorov, S. Georgiev, K. Mitev

{"title":"Real time monitoring of Rn-222 in workplaces and estimation of working time correction factor","authors":"I. Dimitrova, V. Todorov, S. Georgiev, K. Mitev","doi":"10.1016/j.radmeas.2024.107359","DOIUrl":"10.1016/j.radmeas.2024.107359","url":null,"abstract":"<div><div>The potential of electronic monitors for evaluating radon exposure is still not fully harnessed, and tests under real conditions are scarce. Ten workplaces were continuously monitored for a year with the radon measurement network of Sofia University, with calibrated and metrologically assured RadonEye +2 monitors. In 7 of the workplaces the average activity concentration of radon during the working time was significantly lower than the total time average. This difference is attributed to behavioral patterns. The ratio of the working time and the total time average (called working time correction factor <em>k</em><sub>WT</sub>) for the whole year ranged from 0.71 to 0.98. Its weekly values varied significantly with coefficients of variation between 9 and 28%. Therefore, using short term estimates of <em>k</em><sub>WT</sub> to correct the total time radon average determined by passive detectors could lead to bias.</div><div>The workplaces also exhibited different seasonal radon patterns, although most were offices with similar schedules. In most pairs of workplaces the monthly averages were correlated very weakly or even negatively. This indicates that seasonal radon variations could be specific to each workplace. The value of <em>k</em><sub>WT</sub> also varied with the season, suggesting that seasonal variations of radon during working hours might differ from those observed with passive integrating detectors.</div><div>Overall, long-term follow-up by metrologically assured electronic monitors could help to improve and personalize the estimate of radon exposure of workers. These monitors could potentially support smart anti-radon systems with optimal operation schedules, thereby contributing to the reduction of the energy impact of buildings.</div></div>","PeriodicalId":21055,"journal":{"name":"Radiation Measurements","volume":"181 ","pages":"Article 107359"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coloration-dependent correction for heavy ion measurements in an Al2O3:C,Mg-based fluorescent nuclear track detector Al2O3:C， mg基荧光核径迹检测器中重离子测量的颜色依赖校正

IF 1.6 3区物理与天体物理

Radiation Measurements Pub Date : 2025-02-01 DOI: 10.1016/j.radmeas.2025.107384

Jun Hu, Tamon Kusumoto, Satoshi Kodaira

{"title":"Coloration-dependent correction for heavy ion measurements in an Al2O3:C,Mg-based fluorescent nuclear track detector","authors":"Jun Hu, Tamon Kusumoto, Satoshi Kodaira","doi":"10.1016/j.radmeas.2025.107384","DOIUrl":"10.1016/j.radmeas.2025.107384","url":null,"abstract":"<div><div>To reduce or eliminate fluctuations in fluorescence intensity due to optical absorption and spherical aberration of a focused laser beam, and variations in color center concentrations between individual Al<sub>2</sub>O<sub>3</sub>:C,Mg-based fluorescent nuclear track detectors (FNTDs), we adopted the intensities of F<sub>2</sub><sup>2+</sup> (2 Mg) and F<sub>2</sub><sup>+</sup> (2 Mg) color centers corresponding to green and near-infrared (NIR) colorations, respectively. These intensities were used to develop coloration-dependent correction methods to improve accuracy of the FNTD-based heavy ion measurements. The FNTDs were irradiated with He, C, Ne, and Fe ions to prepare mono-energetic and multi-energetic specimens and then the performance of the correction methods was evaluated. Both the green and NIR coloration-dependent correction methods eliminated fluctuations in fluorescence intensity with depth, reducing the coefficient of variation (<em>CV</em>) by 36.6% and 35.9%, respectively. The green coloration-dependent correction method also reduced fluctuations of fluorescence intensity due to color centers by decreasing <em>CV</em><sub><em>w</em></sub> by 45.3%. The NIR coloration-dependent correction method was ineffective for correcting fluctuations due to color centers compared to the green coloration-dependent correction. The fluorescence intensities of He, C, and Fe tracks corrected by green and NIR colorations in the multi-energetic specimen coincided with those of mono-energetic specimens. Hence, these methods provide reliable and standardized approaches for heavy ion measurements and have the potential to be applied in determining the LET of heavy ions.</div></div>","PeriodicalId":21055,"journal":{"name":"Radiation Measurements","volume":"181 ","pages":"Article 107384"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of Cerenkov optical noise in a brachytherapy scintillating fibre dosimeter with an air-core Ag-PTFE light guide 采用空心Ag-PTFE光导的近距离闪烁光纤剂量计中切伦科夫光噪声的评估

IF 1.6 3区物理与天体物理

Radiation Measurements Pub Date : 2025-02-01 DOI: 10.1016/j.radmeas.2024.107348

Nor El Houda Boughaba , Boualem Bouzid , Nadia Yahlali

{"title":"Assessment of Cerenkov optical noise in a brachytherapy scintillating fibre dosimeter with an air-core Ag-PTFE light guide","authors":"Nor El Houda Boughaba , Boualem Bouzid , Nadia Yahlali","doi":"10.1016/j.radmeas.2024.107348","DOIUrl":"10.1016/j.radmeas.2024.107348","url":null,"abstract":"<div><div>Plastic scintillating fibre dosimeters have been the subject of multiple studies in the field of medical dosimetry, due to their notable dosimetric properties, including water equivalence, small size and absence of energy and dose rate dependence. The main drawback of this dosimeter type in high dose-rate brachytherapy is the presence of Cerenkov photons produced by electrons with velocities exceeding the speed of light in the fibre plastic medium. In this work, aimed at minimizing Cerenkov noise at its source in a prototype scintillation fibre dosimeter, the plastic light guide exposed to the radiation field was replaced by an air-core Ag-PTFE light guide of miniature size. Cerenkov-to-signal ratio was first assessed in fibre bundles using a dedicated experimental setup and simulations. This ratio was found of about <span><math><mrow><mo>∼</mo><mn>1</mn></mrow></math></span> <span><math><mtext>%</mtext></math></span> for scintillating fibres when exposed to radiation in the energy range 1–2 MeV. The performance of the air-core Ag-PTFE light guide dosimeter was then studied, resulting in a decrease of the Cerenkov light in the total signal from <span><math><mrow><mo>∼</mo><mn>50</mn></mrow></math></span> <span><math><mtext>%</mtext></math></span> to less than 0.3%, compared to the standard dosimeter with a plastic optical light guide. The counterpart of this substantial reduction of optical noise is a reduction of 40% in the dosimeter light collection efficiency. However, this is not a limiting feature of this Cerenkov-free dosimeter, since further optical optimizations are possible, in addition to the use of a high-gain and high-sensitivity photodetector for its readout.</div></div>","PeriodicalId":21055,"journal":{"name":"Radiation Measurements","volume":"181 ","pages":"Article 107348"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A correction method between sample mass and EPR intensity in radiation dose reconstruction 辐射剂量重建中样品质量与EPR强度的校正方法

IF 1.6 3区物理与天体物理

Radiation Measurements Pub Date : 2025-02-01 DOI: 10.1016/j.radmeas.2024.107364

Shuchen Wang , Zhenlin Jia , Desheng Xue , Baotian Pan

{"title":"A correction method between sample mass and EPR intensity in radiation dose reconstruction","authors":"Shuchen Wang , Zhenlin Jia , Desheng Xue , Baotian Pan","doi":"10.1016/j.radmeas.2024.107364","DOIUrl":"10.1016/j.radmeas.2024.107364","url":null,"abstract":"<div><div>In electron paramagnetic resonance (EPR) radiation dose reconstruction, maintaining a consistent mass across a series of aliquots is crucial. However, due to sample limitations or experimental uncertainties, achieving this consistency may not always be possible. To address these challenges and optimize experimental processes, a theoretical model (<span><math><mrow><mi>I</mi><mo>−</mo><mi>M</mi></mrow></math></span> model) was developed to describe the relationship between EPR intensity emanating from a TE<sub>011</sub> mode cylindrical resonant cavity and sample mass. The model was verified using the TEMPO paramagnetic standard and quartz, a common material employed in dosimetry reconstructions. Based on this model and the evaluation of the modulation magnetic field uniformity, correction methods for EPR intensity in solid powder samples were proposed. The model reveals that the non-uniformity of the microwave magnetic field distribution in the resonant cavity leads to spatial inconsistency in sample responses, resulting in a non-linear relationship between EPR intensity and sample mass, characterized by a “sinusoidal + linear” pattern. The parameter <span><math><msub><mrow><mi>I</mi></mrow><mrow><mi>cen.</mi></mrow></msub></math></span> is recommended as a metric for EPR intensity, as it intrinsically characterizes the spin concentration of the sample regardless of sample mass, thereby enhancing the accuracy of quantitative EPR measurements and equivalent dose evaluation.</div></div>","PeriodicalId":21055,"journal":{"name":"Radiation Measurements","volume":"181 ","pages":"Article 107364"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A neutron energy spectrum study of 241Am-Be based on improved Gravel and PSO algorithms 基于改进砾石和粒子群算法的241Am-Be中子能谱研究

IF 1.6 3区物理与天体物理

Radiation Measurements Pub Date : 2025-02-01 DOI: 10.1016/j.radmeas.2024.107368

Lu-ying Yang, Hai Wan, Ying-Chao Zhang, Xiao-fei Jiang

{"title":"A neutron energy spectrum study of 241Am-Be based on improved Gravel and PSO algorithms","authors":"Lu-ying Yang, Hai Wan, Ying-Chao Zhang, Xiao-fei Jiang","doi":"10.1016/j.radmeas.2024.107368","DOIUrl":"10.1016/j.radmeas.2024.107368","url":null,"abstract":"<div><div>In the study of neutron energy spectra, different methods have been proposed one after another. Due to their ability to provide efficient parameter optimization and accuracy, Gravel algorithm and PSO algorithm are applied to the deconvolution of <sup>241</sup>Am-Be neutron source. In this paper, we first obtain the response function of the multi-sphere spectrometer to the <sup>241</sup>Am-Be neutron source by Geant4 simulation on a platform that is highly consistent with the experimental environment. Then, by combining neutron experimental count rates and neutron response functions, an improved version of Gravel and PSO algorithms is employed to unfold the neutron spectrum of <sup>241</sup>Am-Be neutron source. In this case, the Gravel algorithm improves the divergence result by adding a scaling factor, and the PSO algorithm applies a Cauchy mutation strategy to escape the local optimal solution. Finally, the unfolded neutron energy spectrum of <sup>241</sup>Am-Be is compared with the international standard <sup>241</sup>Am-Be neutron spectrum, and error analysis of the deconvolution is performed using mean square error, average relative deviation, and neutron spectrum quality as indicators. The results show that the improved Gravel and PSO algorithms exhibit superior performance compared to their previous versions and are largely consistent with the international standard <sup>241</sup>Am-Be neutron energy spectrum curve. The MSE, ARD and Qs values for the improved Gravel algorithm are 0.004%, 1.22% and 1.31% respectively, while those for the improved PSO algorithm are 0.25%, 16.29% and 8.08% respectively. This demonstrates the reliability and applicability of both algorithms in reconstructing neutron energy spectra.</div></div>","PeriodicalId":21055,"journal":{"name":"Radiation Measurements","volume":"181 ","pages":"Article 107368"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal stability of the ESR signals of the Al and Ti-Li centers in quartz of tephra 石英中Al和Ti-Li中心ESR信号的热稳定性

IF 1.6 3区物理与天体物理

Radiation Measurements Pub Date : 2025-02-01 DOI: 10.1016/j.radmeas.2025.107380

Naoya Obata , Shin Toyoda

{"title":"Thermal stability of the ESR signals of the Al and Ti-Li centers in quartz of tephra","authors":"Naoya Obata , Shin Toyoda","doi":"10.1016/j.radmeas.2025.107380","DOIUrl":"10.1016/j.radmeas.2025.107380","url":null,"abstract":"<div><div>The thermal stability of the Al and Ti-Li centers in quartz of tephra was systematically investigated in terms of their decay kinetics using two Quaternary tephra samples from Japan, which have independent age estimates, and one modern sediment sample. The Ti-Li center observed in both tephra samples showed a two-step decrease upon heating, indicating the presence of a high temperature part and a low temperature part. The thermal stability of the Al center was found to be similar to the low temperature part of the Ti-Li center, where the characteristic decay times at 19 °C were obtained to be in the order of 10<sup>4</sup> years. The Ti-Li center showed equivalent doses, with preheating at 240–300 °C, consistent with independent age control. However, the dose response curve of the stable part of the Ti-Li center was saturated at about 2 kGy, which corresponds to an age value of 1 Ma. Therefore, the ESR dating of tephra is possibly limited to samples less than 1 Ma. It was also found that the Ti-Li center is enhanced by heating, around 180 °C in the dose range below 1 kGy. This enhancement has little influence on the dating results for the present samples. We recommend introducing preheating in order to remove the unstable part of the Ti-Li center and to accommodate this increase when examining the dose response.</div></div>","PeriodicalId":21055,"journal":{"name":"Radiation Measurements","volume":"181 ","pages":"Article 107380"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143150800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterisation and unique behaviours of radiophotoluminescence Ag-activated phosphate glass under high-dose gamma and high-LET particle irradiation 高剂量γ和高let粒子辐照下银活化磷酸盐玻璃的光致发光特性和独特行为

IF 1.6 3区物理与天体物理

Radiation Measurements Pub Date : 2025-02-01 DOI: 10.1016/j.radmeas.2025.107376

Toshio Kurobori , Yuka Miyamoto , Naoki Takashima , Yuichi Kitagawa , Yasuhiro Koguchi

{"title":"Characterisation and unique behaviours of radiophotoluminescence Ag-activated phosphate glass under high-dose gamma and high-LET particle irradiation","authors":"Toshio Kurobori , Yuka Miyamoto , Naoki Takashima , Yuichi Kitagawa , Yasuhiro Koguchi","doi":"10.1016/j.radmeas.2025.107376","DOIUrl":"10.1016/j.radmeas.2025.107376","url":null,"abstract":"<div><div>We investigated the optical properties and unique behaviours of radiophotoluminescence (RPL) centres in Ag-activated phosphate glass subjected to a high dose of <sup>60</sup>Co gamma ray irradiation. Using the absorbance-transmittance excitation-emission matrix technique, we obtained a corrected three-dimensional (3D) matrix that represents the true excitation and emission spectra. Additionally, a similar trend was observed in the dose-dependence of the orange-to-blue RPL intensity ratio for high doses of low linear energy transfer (LET) radiation (in this work) and high LET radiation, such as alpha particles and heavy charged particles (HCPs). However, it was characterised by a rapid decline in orange RPL efficiency (known as ‘LET quenching’). Moreover, we analysed the fluorescence lifetimes and spectra of the components, as observed in the steady-state emission. By tracking the changes in the RPL intensity, fluorescence lifetimes, and peak wavelength shifts as a function of gamma ray dose, we discovered for the first time that blue, green, orange, red, and near-infrared RPL exhibit complex behaviours, such as reduction, enhancement, disappearance, and emergence, while preserving their spectral profiles. We aimed to explore whether Ag-activated phosphate glass could serve as both a dosimeter and tool for evaluating LET values.</div></div>","PeriodicalId":21055,"journal":{"name":"Radiation Measurements","volume":"181 ","pages":"Article 107376"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of a method for distinguishing alpha particles from other types of radiation using a high-resolution alpha imager 开发一种利用高分辨率α成像仪从其他类型的辐射中区分α粒子的方法

IF 1.6 3区物理与天体物理

Radiation Measurements Pub Date : 2025-02-01 DOI: 10.1016/j.radmeas.2024.107371

Yuki Morishita , Naoki Sagawa , Makoto Fujisawa , Shunsuke Kurosawa , Makoto Sasano , Masateru Hayashi , Hiroki Tanaka

{"title":"Development of a method for distinguishing alpha particles from other types of radiation using a high-resolution alpha imager","authors":"Yuki Morishita , Naoki Sagawa , Makoto Fujisawa , Shunsuke Kurosawa , Makoto Sasano , Masateru Hayashi , Hiroki Tanaka","doi":"10.1016/j.radmeas.2024.107371","DOIUrl":"10.1016/j.radmeas.2024.107371","url":null,"abstract":"<div><div>The effects of different types of radiation on a high-resolution alpha imager developed using an electron multiplying charge-coupled device (EMCCD) camera were investigated. This imager was originally developed to visualize alpha particles from Pu oxide particles at decommissioning sites. Other types of radiation such as beta particles, gamma rays, and neutrons are also present. The purpose of this study is to investigate the effects of these background radiations on the imager and to develop a method to discriminate between alpha particles and other types of radiation. When measuring gamma rays, and neutrons, the sensor of the EMCCD camera generated high intensity signals due to gamma rays and neutrons. These radiations were identified by image processing. The image values were binarized and the findContours function for detecting edges in an image was applied to count the number of alpha particle spots. The results showed that alpha and gamma (neutron) radiation can be discriminated by using differences in intensity. This method will be useful for visualizing alpha particles at decommissioning sites.</div></div>","PeriodicalId":21055,"journal":{"name":"Radiation Measurements","volume":"181 ","pages":"Article 107371"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ba-Sr fluoride borates as inorganic radiochromic materials 钡锶氟硼酸盐作为无机放射性变色材料

IF 1.6 3区物理与天体物理

Radiation Measurements Pub Date : 2025-02-01 DOI: 10.1016/j.radmeas.2024.107352

Sergey V. Rashchenko , Tatyana B. Bekker , Alexey V. Davydov , Boris G. Goldenberg

{"title":"Ba-Sr fluoride borates as inorganic radiochromic materials","authors":"Sergey V. Rashchenko , Tatyana B. Bekker , Alexey V. Davydov , Boris G. Goldenberg","doi":"10.1016/j.radmeas.2024.107352","DOIUrl":"10.1016/j.radmeas.2024.107352","url":null,"abstract":"<div><div>Radiochromic sensors, which enable express visualization of ionizing radiation by change in color or transparency, are ubiquitous in medical, scientific, and industrial applications. Most of the currently known radiochromic materials belong to organic compounds, while the potential of <em>inorganic</em> materials in terms of radiochromicity remains nearly unexplored. Here we report the measurements of dose sensitivity of radiochromic coloration intensity and decay kinetics of radiation-induced color centers for inorganic Ba-Sr fluoride borates with the compositions Ba<sub>7</sub>(BO<sub>3</sub>)<sub>3.5</sub>F<sub>3.5</sub> and Ba<sub>3</sub>Sr<sub>4</sub>(BO<sub>3</sub>)<sub>4</sub>F<sub>2</sub>. Experiments with irradiation of these polycrystalline materials using broadband synchrotron radiation (5–17 keV) revealed that the Ba<sub>3</sub>Sr<sub>4</sub>(BO<sub>3</sub>)<sub>4</sub>F<sub>2</sub> material has dose sensitivity of radiochromic coloration potentially suitable for measurements of doses from several cGy to ∼10 Gy air kerma. The Ba<sub>7</sub>(BO<sub>3</sub>)<sub>3.5</sub>F<sub>3.5</sub> material demonstrated a slightly lower dose sensitivity of radiochromic coloration than Ba<sub>3</sub>Sr<sub>4</sub>(BO<sub>3</sub>)<sub>4</sub>F<sub>2</sub>, but also revealed the possibility of quick bleaching of the radiochromic coloration using intense visible light, which may be used in the development of reusable radiochromic sensors.</div></div>","PeriodicalId":21055,"journal":{"name":"Radiation Measurements","volume":"181 ","pages":"Article 107352"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0